PLACE VALUE

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Across
  1. 2. NUMBER OF PERIODS IN AN 8 DIGIT NUMBER
  2. 3. EXAMPLE OF A TRIANGULAR NUMBER
  3. 6. PLACE VALUE OF 6 IN 456987
  4. 8. THE ROMAN NUMBER LXXX IS ...?
  5. 11. NUMBER OF DIGITS IN 8765674
  6. 12. NUMBER OF ZEROES IN 1 CRORE
Down
  1. 1. UNITS DIGIT IN THE NUMBER BEFORE 6745385
  2. 4. 5698 ROUNDED TO 5700 IS NEAREST TO ...?
  3. 5. FACE VALUE OF UNIT DIGIT IN 564739
  4. 7. 10,000,00 IN INTERNATIONAL SYSTEM IS CALLED...?
  5. 9. NEXT NUMBER IN THE PATTERN 4,6,8,10,...?
  6. 10. 8 DIGIT NUMBER BEGINS WITH...?